Eat foods that are less dense in calories, drink a lot of water, and water only (you'll be satisfied with less calories if you eat them rather than drinking them).
Whenever you start craving fattening foods, hurry and drink a lot of water so it fills you up. This will more or less take the temptation away.
Do some training? Maybe running, maybe go to a gym, or even just random stuff around your house. Walk around, go up and down the stairs, jumping...as long as you're not sitting still too much it's great.
I wish you the best, stay positive